evans



(No Model.)

' J. EVANS.

y BRICK NOZZLE lPOR GAS FURNAGB PI-PES. N'o. 296.398.V Patented Apr. 8,1884.

//l l//l/ mmrlisssss A x hvaqlm UNITED STATES 4PATENT Orricn.

JOHN EVANS, OF ETNA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO GEORGE A.CHALFANT, OF SAME PLACE.

BRICK NOZZLE FOR GAS-FURNACE PIPES.

SPBCIFICATIN forming part of Letters Patent No. 296,398, dated April 8,1884.

Application mea Jun@ 1,1883. (No model.;

''o til whom t may concern,.-

Be it known that l, JOHN Evans, of Etna, in the county of Allegheny andState of Pennsylvania, have invented a new and useful Iniprovexnent inGaseous-Fuel Furnaces; and I do hereby declare the following to be afull, clear, and exact description thereof, reference being hadto theaccompanying drawings, forming part of this specification, in Which-Figure l is a longitudinal sectional view of a puddling-furnace, showingthe application thereto of my improvement. Fig. 2is a horizontal sectionon the line x of Fig. l.

Like letters of reference indicate like parts in each.

Difficulty has heretofore been experienced in that class of furnaces inwhich gas is used, and particularly natural or hydrocarbon gas from theearth, on account ofthe burning of the ends of the pipes Which supplythe gas to the furnace. The pipes inust be led to the burningpoint,which is usually at or near the bridge of the furnace, and consequentlytheir ends are exposed to the intense heat of the furnace and burn offrapidly, producing ine; quality in the heat, irregularity in the actionoi' the furnace, leakage of air into the furnace, and leakage and Wasteof gas. To obviate all of these disadvantages l lead the gas into thefurnace by means of thick pipes or nozzles a, made of fire-clay or otherrefractory material, which are built into the Wall b of the furnace,

and project into the vertical air iiue or fines front ends arepreferably beveled or pointed,

. as at c2, so as to interfere as little as need be with the draft ofthe furnace. rIhe rear ends have a socket, ai, (if-larger diameter thanthat of the channel a', for receiving the ends of the branch pipes e ofthe gas-main e. The joints between the pipes a and e are made tight bypacking or cement, as at g. Being thick, strong, and fire-resisting bynature, the nozzle is not affected inj uriously by the heat to which itis exposed. The pipes e', not being exposed at all to the heat of thefurnace, do not burn out. Another advantage is that the gas main andpipes can be removed and replaced Without injuring or in any Waydisturbing the Walls of the furnace.

Vhat I claim as my invention, and desire to secure by Letters Patent,is-

In furnaces for burning gaseous fuel, the combination, with the air-ilue and bridge- Wall, of the refractory gas-induction nozzles arrangedin the furnace-Walls and projecting into the air-due to a point at ornear the bridge-wall, said nozzles having beveled delivery ends andsockets for the reception of the gas-supply pipes, substantially as andfo the purposes specified.

lIn testimony whereof I have hereunto set my hand this 31st day of May,A, D. 1883.

JOHN EVANS.

Witnesses:

W. B. Convvnv,

n T. B. Knien.

